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fixed 2-cell vertical scrolling [40-cell mode only, need investigation]: fixes left column in Gynoug

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ekeeke31 2010-04-19 12:19:41 +00:00
parent 11859d43de
commit 9d430a0851
1 changed files with 28 additions and 11 deletions
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39
source/render.c
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@ -1081,9 +1081,13 @@ static void render_bg_vs(int line, int width)
if(shift)
{
dst = (uint32 *)&buf[0x10 + shift];
nt = (uint32 *)&vram[ntbb + (((line >> 3) << pf_shift) & 0x1FC0)];
v_line = (line & 7) << 3;
#ifdef LSB_FIRST
v_line = (reg[12] & 1) ? ((line + ((vs[0] >> 16) & 0x3FF)) & pf_row_mask) : line;
#else
v_line = (reg[12] & 1) ? ((line + (vs[0] & 0x3FF)) & pf_row_mask) : line;
#endif
nt = (uint32 *)&vram[ntbb + (((v_line >> 3) << pf_shift) & 0x1FC0)];
v_line = (v_line & 7) << 3;
atbuf = nt[(index-1) & pf_col_mask];
DRAW_COLUMN(atbuf, v_line)
@ -1145,8 +1149,13 @@ static void render_bg_vs(int line, int width)
{
dst = (uint32 *)&buf[0x10 + shift + (start<<4)];
nt = (uint32 *)&vram[ntab + (((line >> 3) << pf_shift) & 0x1FC0)];
v_line = (line & 7) << 3;
#ifdef LSB_FIRST
v_line = (reg[12] & 1) ? ((line + (vs[start] & 0x3FF)) & pf_row_mask) : line;
#else
v_line = (reg[12] & 1) ? ((line + ((vs[start] >> 16) & 0x3FF)) & pf_row_mask) : line;
#endif
nt = (uint32 *)&vram[ntab + (((v_line >> 3) << pf_shift) & 0x1FC0)];
v_line = (v_line & 7) << 3;
/* Window bug */
if (start) atbuf = nt[index & pf_col_mask];
@ -1343,9 +1352,13 @@ static void render_bg_im2_vs(int line, int width, int odd)
if(shift)
{
dst = (uint32 *)&buf[0x10 + shift];
nt = (uint32 *)&vram[ntbb + (((line >> 3) << pf_shift) & 0x1FC0)];
v_line = (((line & 7) << 1) | odd) << 3;
#ifdef LSB_FIRST
v_line = (line + (reg[12] & 1) ? ((vs[0] >> 17) & 0x3FF) : 0) & pf_row_mask;
#else
v_line = (line + (reg[12] & 1) ? ((vs[0] >> 1) & 0x3FF) : 0) & pf_row_mask;
#endif
nt = (uint32 *)&vram[ntbb + (((v_line >> 3) << pf_shift) & 0x1FC0)];
v_line = (((v_line & 7) << 1) | odd) << 3;
atbuf = nt[(index-1) & pf_col_mask];
DRAW_COLUMN_IM2(atbuf, v_line)
@ -1404,9 +1417,13 @@ static void render_bg_im2_vs(int line, int width, int odd)
if(shift)
{
dst = (uint32 *)&buf[0x10 + shift + (start<<4)];
nt = (uint32 *)&vram[ntab + (((line >> 3) << pf_shift) & 0x1FC0)];
v_line = (((line & 7) << 1) | odd) << 3;
#ifdef LSB_FIRST
v_line = (line + (reg[12] & 1) ? ((vs[start] >> 1) & 0x3FF) : 0) & pf_row_mask;
#else
v_line = (line + (reg[12] & 1) ? ((vs[start] >> 17) & 0x3FF) : 0) & pf_row_mask;
#endif
nt = (uint32 *)&vram[ntab + (((v_line >> 3) << pf_shift) & 0x1FC0)];
v_line = (((v_line & 7) << 1) | odd) << 3;
/* Window bug */
if (start) atbuf = nt[index & pf_col_mask];